Kvass: or soda from stale rye bread

Soda made from stale bread? Yes please, I'll have another glass says everyone in Eastern Europe. Kvass is a traditional beverage that Jaimee's Russian grandmother used to make. Because it's fermented it's good for you, but you drink it because it's delicious. It's like a light table beer. The darker the rye, the better the kvass.

Feel free to halve or double this recipe depending how much bread you have that needs using up.

Put around 2 cups of torn very stale rye bread into a clean 2L, pour in 1 cup raw sugar and cover with 6 cups of water.  Add 1 tablespoon of caraway seeds and 10 sultanas or 2 prunes. Seal and allow to ferment for 4-7 days, opening the jar every day or so to release any gasses. Once the kvass tastes tart, strain and bottle into clean sealable bottles. Leave at room temperature to carbonate for a few more days, then refrigerate and drink within a week or so.